The sunflower (Helianthus annuus) is an annual plant grown as a crop for its edible oil and edible fruits (commonly called "sunflower seeds").
The plant has an erect rough-hairy stem, reaching typical heights of 3 meters. The tallest sunflower on record achieved 8.23 m (27 ft). Sunflower leaves are broad, coarsely toothed, rough and mostly alternate. Source